1(1) The minimum detention time of the reclaimed water within a treatment wetland shall be no less than fourteen days unless the applicant can affirmatively demonstrate that a shorter detention time will provide the required level of water quality in the discharge from the treatment wetland. This minimum detention time shall be calculated on an annual basis by dividing the estimated volume of the treatment wetland by the sum of the design flow rates of reclaimed water and natural inflow to the treatment wetland. The estimated volume of the treatment wetland shall be determined for the area and depth of the treatment wetland based on the landward extent of waters as specified in Sections 115373.4211, F.S., 117and Rule 11962-301.400.
120(2) To maximize a treatment wetland’s assimilative capacity for reclaimed water on a long-term basis, the loading rate of total nitrogen (as N) shall not exceed 25g/m1472148/yr except for hydrologically altered wetlands where it shall not exceed 75 g/m1612162/yr, and the loading rate of total phosphorus (as P) shall not exceed 3.0 g/m1772178/yr except for hydrologically altered wetlands where it shall not exceed 9.0 g/m1912192/yr. The nutrient loading rates in hydrologically altered wetlands shall be appropriately designed for the site and approved by the Department to assure compliance with Rules 21862-611.500219and 22062-611.450, 221F.A.C.
